These are the words of the CEO of the world's largest asset manager, BlackRock, Inc. (BLK). Larry Fink has warned investors of a retirement crisis in the future as pension savings fail to keep up with the ever-increasing longevity, thanks to medical breakthroughs. While increasing longevity is a good thing for individuals, the world's aging population will present a significant challenge for governments, to maintain social security benefits as we know them today, given more people will be collecting benefits, than contributing.